It's been an exciting couple days at PAX, especially if you're a Portal 2 fan! We're following up the co-op campaign screenshots released yesterday - with actual footage from the co-op Portal 2 ...

This extended trailer for Portal 2's co-op mode, shown to attendees at PAX 2010 behind closed doors, adds narration from GLaDOS. I'm sure you've seen the two loveable robots before, but this video ...

GameSpot may get a commission from retail offers. According to GLaDOS, Portal 2's dry-witted antagonist, scientific achievement is all about cooperation. That's why one of history's greatest ...

Valve has released an update for the classic title Portal 2 with a big list of changes. Despite Portal 2 being a decade old, this patch implements multiple additions and fixes a series of issues ...

Valve showed off the first gameplay footage of the Portal 2 coop mode, set to be one of the highlights of the game. The walkthrough video shows us glimpses of some of the new features and gameplay ...

For the first part of the chamber, it is pretty straight forward. Have one player use the portals to direct the light bridge and then have the second player take over when dropping onto the first ...

Valve has released an HD version of the Portal 2 co-op trailer complete with Glados commentary, and we have it posted for you below. The co-op portion of the game features its own playable characters, ...

One of the longest lines at PAX 2010wasn't to play anything, but to see a live demo of Portal 2’s co-op mode. Valveonly showeda few of the mode’s puzzles, but we can say pretty assuredly that it’ll be ...

Bloody hell. I just had a look at the Portal 2 workshop just so that I could get my facts straight, and there's over 170 THOUSAND maps on there. If you follow the rule that 90% of everything is bad, ...

Portal 2 features a separate two-player co-operative campaign, playable over the internet, and new gameplay features include physics-changing paint. That's according to various reports and scans that ...

GameSpot may get a commission from retail offers. According to GLaDOS, Portal 2's dry-witted antagonist, scientific achievement is all about cooperation. That's why one of history's greatest ...